FIELD: physics.;SUBSTANCE: proposed system comprises illuminators, for example, LEDs 11 used on field 1 to designate marking 11 of various games. Invention aims at producing appliance for tangible and flexible marking. By cutting on appropriate illuminators 11 it is possible to make visible marking 100 for definite game. Marking system may comprise also appliance to detect occurrence of some game situations. Thus, photo detectors 12 may, for example, detect ball 2 crossing marking line 100. Controller 13 may then cut on illuminators 11 of separate signaling devices 14, 15 to designate detected event. Controller 13 may also allow wireless communication with, for example referee to help him (her) make right decision.;EFFECT: higher efficiency of marking.;15 cl, 2 dwg
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